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RO3144A
• Designed for 916.5 MHz Transmitters
• Very Low Series Resistance
• Quartz Stability
• Surface-mount Ceramic Case
• Complies with Directive 2002/95/EC (RoHS)
916.5 MHz
SAW
Pb
Resonator
The RO3144A is a one-port surface-acoustic-wave (SAW) resonator packaged in a surface-mount ceramic
case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters
operating at 916.5 MHz.
Absolute Maximum Ratings
Rating
Value
0
Units
dBm
VDC
°C
CW RF Power Dissipation
DC Voltage Between Terminals
Case Temperature
±30
-40 to +85
260
Soldering Temperature, 10 seconds / 5 cycles maximum
°C
SM5035-4
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
Notes
Minimum
916.300
916.350
916.400
Typical
Maximum
916.700
916.650
916.600
±200
Units
RO3144A
RO3144A-1
RO3144A-2
RO3144A
fC
MHz
2,3,4,5
Tolerance from 916.5 MHz
fC
RO3144A-1
RO3144A-2
±150
kHz
dB
±100
Insertion Loss
Quality Factor
IL
QU
QL
2,5,6
5,6,7
1.2
6600
750
25
2.5
Unloaded Q
50 Loaded Q
Temperature Stability
Turnover Temperature
TO
10
40
°C
Turnover Frequency
fO
6,7,8
fC
kHz
ppm/°C2
ppm/yr
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
|fA|
0.032
<±10
Frequency Aging
1
5
DC Insulation Resistance between Any Two Terminals
1.0
M
RF Equivalent RLC Model
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
RM
LM
13.1
15
5, 6, 7, 9
µH
fF
CM
2.1
CO
5, 6, 9
2, 7
2.09
14.5
pF
nH
Test Fixture Shunt Inductance
Lid Symbolization
LTEST
RO3144A: 663, RO3144A-1: 897, RO3144A-2: 813, // YYWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
2.
Frequency aging is the change in f with time and is specified at +65 °C or
6.
7.
The design, manufacturing process, and specifications of this device are
subject to change without notice.
C
less. Aging may exceed the specification for prolonged temperatures
above +65 °C. Typically, aging is greatest the first year after manufacture,
decreasing in subsequent years.
Derived mathematically from one or more of the following directly
measured parameters: f , IL, 3 dB bandwidth, f versus T , and C .
C
C
C
O
The center frequency, f , is measured at the minimum insertion loss point,
8.
Turnover temperature, T , is the temperature of maximum (or turnover)
C
O
IL , with the resonator in the 50 test system (VSWR 1.2:1). The
frequency, f . The nominal frequency at any case temperature, T , may be
MIN
O
C
2
shunt inductance, L
, is tuned for parallel resonance with C at f .
TEST
O C
calculated from: f = f [1 - FTC (T -T ) ]. Typically oscillator T is
O
O
C
O
Typically, f
or f
is approximately equal to the
OSCILLATOR
TRANSMITTER
approximately equal to the specified resonator T .
O
resonator f .
C
9.
This equivalent RLC model approximates resonator performance near the
3.
4.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
resonant frequency and is provided for reference only. The capacitance C
O
is the static (nonmotional) capacitance between the two terminals
measured at low frequency (10 MHz) with a capacitance meter. The
Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment
manufacturer.
measurement includes parasitic capacitance with "NC” pads unconnected.
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: C C - 0.05 pF.
5.
Unless noted otherwise, case temperature T = +25 ± 2 °C.
C
P
O
©2010-2014 by Murata Electronics N.A., Inc.
Copyright © Murata Manufacturing Co., Ltd. All Rights Reserved 2007
RO3144A (R) 4/24/14
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